<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音">
    </div>

    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom"
            v-for="item of list"
            :key="item.id"
            @click="handleCityClick(item.name)"
        >{{item.name}}</li>

        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'
    export default {
        name: "CitySearch",
        props:{
          cities:Object
        },
        data(){
          return{
            keyword:'',
            list:[],
            timer:null
          }
        },
      methods:{
        handleCityClick(city){
          this.$store.commit('changeCity',city)
          this.$router.push('/')
        }
      },
      watch:{
          keyword(){
            if (this.timer){
              clearTimeout(this.timer)
            }
            if (!this.keyword){
              this.list = []
              return
            }
            this.timer = setTimeout(()=>{
              const result = []
              for (let i in this.cities){
                this.cities[i].forEach((value)=>{
                  if (value.spell.indexOf(this.keyword)>-1 ||
                    value.name.indexOf(this.keyword)>-1
                  ){
                    result.push(value)
                  }
                })
              }
              this.list = result
            })
          }
      },
      mounted() {
          this.scroll = new Bscroll(this.$refs.search)
      },
      computed:{
          hasNoData(){
            return !this.list.length
          }
      }
    }
</script>

<style scoped lang="stylus">
  @import "../../../assets/styles/varibles.styl"
  .search
    top: .3rem
    height: .72rem
    padding: 0 .1rem
    background: $baColor
    .search-input
      box-sizing: border-box
      width: 100%
      height: .62rem
      padding: 0 .1rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
  .search-content
    z-index: 1
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666
</style>
